George i-iaiss



(No Model.)

7 G. HAISS.

HOISTING BUGKET.

No. 497,021. Patented May 9, 1893.

W/TNESSES:

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UNITED TATES PATENT OFFICE.

GEORGE HAISS, OF NEW YORK, N. Y.

HOlSTlNG-BUCKET.

SPECIFICATION forming part of Letters Patent No. 497,021, dated May 9,1893.

Application filed November 18, 1892. Serial No. 452399- (No model.)

To all whom it may concern:

Be it known that I, GEORGE HAISS, a citizen of the United States,residing in the city, county, and State of New York, have inventedcertain new and useful Improvements in I-Ioisting-Buckets, of which thefollowing is a specification.

This invention refers to certain improvements in hoistingbuckets of thatclass in which the pivoted bucket-sections or jaws are opened or closedby raising or lowering a suitable hoisting mechanism; and the inventionconsists of a hoisting-bucket comprising an arched supporting frame,bucket-sections or jaws which are pivoted to the lower ends of saidframe, and pivot-links which connect the innor corners of said jaws witha transverse pulley-carrying shaft. The transverse shaft is connected bychains or ropes with a topshaft of the supporting frame and providedwith a pulley, around which a chain or rope is passed which is guidedover an antifriction roller of the top-shaft and connected to a hoistingdrum, so that the raising of the pulley produces the closing of the jawson the load, while the lowering of the pulley permits the opening of thejaws and the discharge of the load, as will be fully describedhereinafter and finally pointed out in the claim.

In the accompanying drawings, Figure 1 is a side elevation of myimproved hoisting bucket, showing the same in closed position, ready forlifting the load. Fig. 2 is a side elevation of the bucket, showing thesame in open position aftertheload is discharged, and Figs. 3 and 4 arevertical transverse sections of the bucket respectively on lines 3 3,Fig. 1, and 4c 4, Fig. 2.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the supporting frame of myimproved hoisting bucket. The frame A is composed of two archedsteel-bars a, which are made to converge toward each other and which areconnected by a transverse shaft a, at the upper ends of the bars and twoshafts a which are located at the ends of the arched and converging barsa. The lower transverse shafts a serve as the pivots on which the jaws BB swing when they are opened or closed. The upper shaft a carries a hooka to which the hoisting chain or rope C is attached and an antifrictionroller a over which the jaw-operating chain or rope Dis guided, it beingretained on the pulley by a suitable guard or keeper a as shown in Figs.3 and 4. The arched bars a are also connected below the upper shaft a bytransverse braces a and at the lower ends by longitudinal side-straps aThe inner corners of the jaws B B are connected by pivot links 1) b witha transverse pivot-shaft B, to which a pulley P is attached. The end ofthe jaw-operating chain or rope D is attached to the pulley P. Thepivot-shaft B is further supported by means of suspension chains orropes E, the upper ends of which are attached to the upper shaft a,while their lower ends are attached to the pivot-shaft B and woundaround the same when the pulley P and with it the jaws B B are raised bythe chain or rope D. The chains or ropes O and D are conducted oversuitable pulleys P, and attached to hoisting drums to which the motionis transmitted in the Well known manner. The bucket is particularlyintended for use in unloading vessels filled with coal and transferringthe same to a coalbin or car. When the bucket arrives in the hold of thevessel, the jaws are in opened position and ready to take up the coal.The

pulley P is next raised by the j aw actuating chain or rope D, theraising of the pulley produces the closing up of the bucket-sections andthe automatic charging or loading of the same with the coal. The raisingof the pulley P is produced by the unwinding of the jaw-operating chainor rope D while the suspension chain or ropes E are simultaneously woundup on the pivot-shaft E at both sides of the pulley P, as shown clearlyin Fig. 3. The bucket with its load is lifted by the joint winding up ofthe chain or rope C and the j aw-operating' chain or rope D, andconducted to the point of discharge, where it is opened by permittingthe pulley P to descend so that the jaws are spread apart by the weightof coal so as to discharge the same in the chute of the coal-bin or intothe car. During the lowering of the pulley P, the chain or ropeD iswound around the pulley while the suspension-cords E are unwound fromthe pivotshaft B of the jaws. The bucket is then returned in openposition into the hold of the vessel, charged again automatically andconducted back to the place of discharge, the bucket being alternatelyclosed and opened as required for the purpose of loading and dischargingthe coal.

My improved coal-hoisting bucket is made of strong and reliableconstruction owing to the pivoting of the jaw sections to the arched andwell-braced supporting-frame A, which by its arched and converging barscan readily pass in and out of the hold, while the opening and closingof the bucket and the automatic charging of the same with coal areaccomplished, by the raising and lowering mechanism described, in aquick and effective manner.

Having thus described my invention, I claim as new and desire to secureby Letters Paten't- The combination, of an arched supporting frame,bucket-sections or jaws pivoted to the lower part of said frame,apivot-shaft, pivotlinks connecting the inner ends of the jaws with saidshaft, a pulley on said shaft, an actuating chain or rope attached tosaid pulley, a guide-roller on the top-shaft of the supporting frame,and suspension-chains or ropes which are attached to the top-shaft andwound around the pivot-shaft when the jaws are closed and unwound fromthe same when the jaws are opened, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

GEORGE HAISS.

Witnesses:

CHARLES SCHROEDER, HARRY WILLARD GRIFFITHS.

